dev_aix_ppc64.go 864 B

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  1. // Copyright 2018 The Go Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style
  3. // license that can be found in the LICENSE file.
  4. // +build aix
  5. // +build ppc64
  6. // Functions to access/create device major and minor numbers matching the
  7. // encoding used AIX.
  8. package unix
  9. // Major returns the major component of a Linux device number.
  10. func Major(dev uint64) uint32 {
  11. return uint32((dev & 0x3fffffff00000000) >> 32)
  12. }
  13. // Minor returns the minor component of a Linux device number.
  14. func Minor(dev uint64) uint32 {
  15. return uint32((dev & 0x00000000ffffffff) >> 0)
  16. }
  17. // Mkdev returns a Linux device number generated from the given major and minor
  18. // components.
  19. func Mkdev(major, minor uint32) uint64 {
  20. var DEVNO64 uint64
  21. DEVNO64 = 0x8000000000000000
  22. return ((uint64(major) << 32) | (uint64(minor) & 0x00000000FFFFFFFF) | DEVNO64)
  23. }